The 6.9.2 version of mRay for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. MRay for Mac lies within Design & Photo Tools, more precisely Viewers & Editors. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free Mac application was originally developed by mbits imaging GmbH.
From the developer:
mRay combines the power and mobility of modern mobile devices to access your radiological images anywhere and anytime. Important tools like annotations and measurements are available as well as an adaptable level window. Image data is encrypted and stored temporally locally on the device, removing the need of a permanent Internet or Wi-Fi connection.
You may want to check out more software for Mac, such as 3D Image Commander, UnCoverIt or TurboCAD Mac Designer, which might be similar to mRay.